Internet-facilitated drugs trade An analysis of the size, scope and the role of the Netherlands Kristy Kruithof, Judith Aldridge, David Décary-Hétu, Megan Sim, Elma Dujso, Stijn Hoorens For more information on this publication, visit www.rand.org/t/RR1607
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Preface
The potential role of the Internet in facilitating drugs trade first gained mass attention with the rise and fall of Silk Road; the first major online market place for illegal goods on the dark web. After Silk Road was taken down by the FBI in October 2013, it was only a matter of weeks before copycats filled the void. Today, there are around 50 so-called cryptomarkets and vendor shops where vendors and buyers find each other anonymously to trade illegal drugs, new psychoactive substances, prescription drugs and other goods and services. But it is not just the obscure parts of the Internet where drugs are on offer. There are numerous web shops, easily found by search engines, which offer designer drugs labelled as ‘research chemicals’. The Netherlands occupies a crucial position in European illicit drug markets. Data from the European Monitoring Centre for Drugs and Drug Addiction (EMCDDA 2016a) suggested it is the main producer of MDMA, ecstasy and herbal cannabis and a key distribution hub for cannabis resin and cocaine. Whether the pivotal role of the Netherlands also extents online, has yet been unclear. While there is considerable attention for these new trends in drug markets, the evidence on their size, shape and evolvement is fairly limited. The Netherlands Ministry of Security and Justice has commissioned, through the Research and Documentation Centre (Wetenschappelijk Onderzoek- en Documentatiecentrum, WODC), RAND Europe a study to provide a firmer evidence base to this phenomenon and, in particular, the role of the Netherlands. In this document, we analyse the size and scope of Internet-facilitated drugs trade both on the so-called clear and dark web, paying special attention to the Netherlands, and delineate potential avenues for law enforcement for detection and intervention. To this end, RAND Europe has collaborated with Judith Aldridge (University of Manchester) and David Décary-Hétu (University of Montreal). The views expressed in this document are those of the authors alone and do not represent those of the Ministry of Security and Justice. The authors are fully responsible for any errors that may have occurred. RAND Europe is an independent not-for-profit policy research organisation that aims to improve policy and decision-making in the public interest through research and analysis. This report has been peer- reviewed in accordance with RAND’s quality assurance standards. For more information about RAND Europe or this document, please contact Stijn Hoorens ([email protected]). RAND Europe RAND Europe Rue de la Loi 82, Bte 3 Westbrook Centre, Milton Road Brussels 1040 Cambridge CB4 1YG Belgium United Kingdom Tel. +32 2669 2400 Tel. +44 1223 353 329
iii
Table of Contents
Preface ...... iii
Table of Contents ...... v
Figures ...... vii
Tables ...... ix
Boxes ...... xi
Samenvatting ...... xiii
Summary ...... xxiii
Acknowledgements ...... xxxi
Glossary ...... xxxiii 1. Introduction ...... 1 1.1. Objectives and scope ...... 2
1.2. Research questions ...... 2
1.3. Structure of this report ...... 4 2. Methodology ...... 5 2.1. Literature review ...... 6
2.2. In-depth interviews ...... 9
2.3. Quantitative analysis of cryptomarket data ...... 11
2.4. Case file analysis ...... 20 3. An introduction to Internet-facilitated drugs trade ...... 21 3.1. Drugs trade via cryptomarkets ...... 21
3.2. Trends in drugs trade via cryptomarkets ...... 27
3.3. Drugs trade and the clear net ...... 29 4. The size and shape of Internet-facilitated drugs trade ...... 33 4.1. Previous studies reporting on the size and shape of Internet-facilitated drugs trade ...... 34
4.2. The number and size of online marketplaces for drugs ...... 35
v 4.3. Types of drugs offered via Internet...... 38
4.4. Revenues of drugs trade ...... 41
4.5. Wholesale versus retail ...... 45
4.6. Volumes of drugs on offer ...... 49
4.7. Other goods and services ...... 50
4.8. Trends in Internet-facilitated drugs trade ...... 54
4.9. In sum ...... 61 5. Shipping routes ...... 63 5.1. Country of origin of drugs traded and vendors operating from the Netherlands ...... 63
5.2. Data on demand side of Internet-facilitated drugs trade ...... 69
5.3. In sum ...... 73 6. Actors involved in Internet-facilitated drugs trade ...... 75 6.1. Overview of actors involved in Internet-facilitated drugs trade ...... 75
6.2. Vendor characteristics and motives ...... 77
6.3. Buyer characteristics, motives and modus operandi ...... 81
6.4. In sum ...... 87 7. Detection and intervention of Internet-facilitated drugs trade ...... 89 7.1. Scope of this chapter ...... 89
7.2. Four modes of detection and intervention ...... 90
7.3. Lessons for detection and intervention of Internet-facilitated drugs trade ...... 97 8. Conclusions ...... 99 References ...... 109
Appendix A: Drug categories ...... 121
Appendix B: Search protocol ...... 123
Appendix C: Overview of studies that collected quantitative information on online drug markets ...... 129
Appendix D: Bibliography of identified literature ...... 139
Appendix E: List of interviewees ...... 161
Appendix F: Interview topic guide ...... 163
vi
Figures
Figure 3.1. Screen shot of drug listings on AlphaBay Market ...... 22 Figure 3.2. Screen shot of a clear net website offering ‘research chemicals’ ...... 30 Figure 4.1. Distribution of estimated revenues across vendors ...... 59
vii
Tables
Table 1.1. Research questions ...... 3 Table 2.1. Overview of study scope and methodologies ...... 6 Table 2.2. List of interviewees ...... 10 Table 2.3. Descriptive statistics of cryptomarkets ...... 12 Table 4.1. Distribution of the listings on active cryptomarkets in January/February 2016 ...... 37 Table 4.2. Categories of drug listing for sale (‘All’ and ‘Dutch’ only drug listings) ...... 39 Table 4.3. Sales (estimated monthly transactions and revenue) across drug categories (‘All’ and ‘Dutch’ only drug listings) ...... 43 Table 4.4. Estimated total minimum retail value of the illicit market for the main drug types in the EU (in billions EUR, USD and per cent) ...... 44 Table 4.5. Distribution of drug listing prices within four price categories ('All' and 'Dutch' only drug listings) ...... 46 Table 4.6. Transactions, revenues and market share of drug listings ('All' and 'Dutch' only drug listings) ...... 47 Table 4.7. Sales (estimated monthly transactions and revenue) across drug categories for wholesale priced drugs only (over $1,000) ('All' and 'Dutch' only drug listings) ...... 48 Table 4.8. Mean weight (g) of exemplar drugs in four price categories ('All' and 'Dutch' only listings) ... 49 Table 4.9. Volume (in grams) traded on marketplaces over the previous month (weight*transactions) for exemplar drugs ('All' (A) and 'Dutch' (B) only listings) ...... 50 Table 4.10. Sales (estimated monthly transactions and revenue) for goods supporting drug production, supply and use ('All' and 'Dutch' only listings) ...... 51 Table 4.11. Items coded as precursors ...... 51 Table 4.12. Other supporting goods and services ...... 52 Table 4.13. Correlation between the different vendor activities ...... 53 Table 4.14. Distribution of vendors’ activities ...... 54 Table 4.15. Trends in categories of drug listed: Silk Road September 2013 to multiple markets January 2016 ...... 55 Table 4.16. Number of listings within four price categories: Silk Road September 2013 to multiple markets January 2016 ...... 55
ix Table 4.17. Revenues and market share: Silk Road September 2013 to multiple markets January 2016 .. 56 Table 4.18. Sales (estimated monthly transactions and revenue) across drug categories, Silk Road September 2013 to multiple markets January 2016 ...... 57 Table 4.19. Trends relating to cryptomarket vendors between September 2013 (SR1) and January 2016 (All cryptomarkets) ...... 58 Table 4.20. Prevalence of email information in listings ...... 61 Table 5.1. Countries from which drug vendors operate: vendors, transactions and revenue ...... 64 Table 5.2. Number of online shops selling NPS ...... 68 Table 5.3. Distribution of transactions and revenues across regions shipped to (All drug listings) ...... 70 Table 5.4. Most common shipping routes on cryptomarkets (All drug listings) ...... 70 Table 5.5. Examples of studies that commented on or had details related to the size of the buyer population ...... 72 Table 6.1. Number of arrests by role and age profile for cryptomarkets, excluding non-drugs ...... 78 Table 6.2. Number of arrests for cryptomarkets by role and country, excluding non-drugs ...... 79 Table A.1.Drug categories…………………………………………………………………………….121 Table B.1. Search strategy…………………………………………………………………………….124 Table B.2. Additional websites searched………………………………………………………………127 Table C.1. Overview of studies that collected quantitative information on drug markets on the dark net...………………………………………………………………………………………… 129 Table C.2. Overview of studies that collected information on clear net markets……………………..134 Table E.1. List of interviewees……………………………………………………………………...161
x
Boxes
Box 2.1. Steps for conducting the literature review ...... 8 Box 2.2. Key focus group questions ...... 10 Box 4.1. The snapshot methodology ...... 35 Box 7.1. Examples of law enforcement interventions ...... 95 Box 7.2. Possible consequences of taking down online marketplaces ...... 96
xi
Samenvatting
Het internet heeft over de afgelopen decennia een aanzienlijke impact gehad op een aantal sectoren in de economie. E-commerce heeft de efficiëntie van productieketens verbeterd, de toegang tot internationale markten vereenvoudigd en de transparantie voor consumenten verbeterd. Dat het internet ook een rol kan spelen bij het faciliteren van drugshandel werd voor het eerst echt duidelijk door het succes van Silk Road: de eerste grote online illegale marktplaats op het zogenaamde dark web. Silk Road werd door de FBI neergehaald in oktober 2013, maar andere, zeer vergelijkbare, markten vulden die ruimte alweer binnen enkele weken. Vandaag de dag zijn er ongeveer 50 zogenoemde cryptomarkten en webshops die alleen toegankelijk zijn met behulp van encryptiesoftware. We gebruiken de term ‘cryptomarkten’, maar er wordt ook wel verwezen naar ‘dark net markten’ (DNMs). Cryptomarkten lijken qua uiterlijk veel op online markplaatsen, zoals Marktplaats.nl of eBay, ook omdat het mogelijk is voor gebruikers om naar advertenties te zoeken en deze vergelijken en om verkopers te beoordelen met feedback. Cryptomarkten brengen verkopers en kopers samen, zodat ze onder pseudoniem illegale drugs, nieuwe psychoactieve stoffen (NPS), medicijnen en andere, vaak illegale goederen en diensten kunnen verhandelen. Het zijn echter niet alleen de donkere krochten van het internet waar drugs worden aangeboden. Er zijn talloze webwinkels op het open internet (het zogenoemde clear net) die gemakkelijk te vinden zijn met zoekmachines en die voornamelijk NPS, ook wel bekend als designer drugs, aanbieden die (nog) niet officieel zijn verboden. Buiten het internet, heeft Nederland een centrale positie in Europese illegale drugsmarkten. Volgens het Europese Monitoring Centrum voor Drugs en Drugverslaving (EMCDDA) is Nederland de belangrijkste producent van xtc en cannabis en een belangrijke doorvoerhaven voor de distributie van hasj en cocaïne. Of die cruciale rol voor Nederland zich ook uitstrekt tot het handel via het internet is nog onduidelijk. Er is voldoende media-aandacht voor internet-gefaciliteerde drugshandel, maar harde cijfers over de omvang, aard en ontwikkeling zijn er nauwelijks.
Doelstelling en methodes
De studie beoogt de omvang en het bereik van de drugshandel gefaciliteerd door het internet te onderzoeken (Sectie 1.1) Dit rapport beoogt de rol van het internet bij het faciliteren van drugshandel te onderzoeken. Het is opgesteld in opdracht van het Wetenschappelijk Onderzoek- en Documentatiecentrum (WODC), het
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onafhankelijke onderzoekscentrum van het Ministerie van Veiligheid en Justitie. Speciale aandacht gaat hierbij uit naar de rol van Nederlandse actoren in het faciliteren van deze handel. De algemene doelstellingen van dit onderzoek waren: • Het inschatten van de omvang en karakteriseren van de aard van drugshandel die door het internet wordt gefaciliteerd; • Het vaststellen van de rol van Nederland in de drugshandel die door het internet wordt gefaciliteerd; en • Het verkennen van de mogelijkheden voor de opsporing en interventie door rechtshandhaving.
De aandacht ging hierbij zowel uit naar drugshandel via cryptomarkten als drugshandel via het clear net. Hieronder wordt toegelicht dat de nadruk van de kwantitatieve analyse zal liggen op cryptomarkten.
We gebruiken een mix van kwalitatieve en kwantitatieve methoden (Hoofdstuk 2) Om deze doelstellingen te bereiken zijn verscheidene kwantitatieve en kwalitatieve onderzoeksmethoden toegepast: een literatuuronderzoek, interviews met experts en vertegenwoordigers van rechtshandhaving; verzameling en analyse van cryptomarketgegevens; en een onderzoek van politiedossiers. De nadruk van dit onderzoek lag op drugshandel via cryptomarkten. De kwantitatieve analyse van de omvang van dit fenomeen werd uitgevoerd door het scrapen en analyseren van gegevens van acht van de grootste cryptomarkten. Deze methoden indexeren alle pagina’s op een webdomein en halen daar de relevante informatie uit. Ironisch genoeg is het eenvoudiger om informatie te verkrijgen via web scraping- methoden op cryptomarkten, dan op het clear net. Ten eerste, het aantal beschikbare cryptomarkten is veel kleiner dan het aantal NPS webwinkels. Ten tweede, clear net gegevens bevatten enkel informatie over de beschikbare producten en hun prijzen, maar niet over het aantal gemaakte transacties. Op cryptomarkten kan het aantal gegeven feedbacks worden gebruikt als proxy voor het aantal transacties. De kwantitatieve bevindingen zijn aangevuld en vergeleken met de bevindingen uit de literatuur, interviews met experts en vertegenwoordigers van rechtshandhaving en een focusgroep met vertegenwoordigers van rechtshandhaving. Verkoop van NPS via webshops op het clear net is voornamelijk in kaart gebracht met behulp van literatuuronderzoek en interviews. Waar mogelijk, zijn resultaten geïllustreerd met bevindingen uit de analyse van de Nederlandse politiedossiers over een neergehaalde cryptomarkt.
De aard en omvang van drugshandel die gefaciliteerd wordt door het internet
Het aantal NPS webshops is de afgelopen jaren sterk gegroeid, maar de omvang van de markt voor NPS op het clear net is onduidelijk (Secties 4.2.2 en 5.1.4) In vergelijking met de handel via cryptomarkten hebben we weinig informatie over de omvang van drugshandel via het clear net verkregen. De onderzoeksliteratuur hierover is relatief beperkt (ondanks dat deze webshops langer bestaan dan cryptomarkten). Desondanks concluderen wij uit onze analyse dat de beschikbaarheid van NPS via webwinkels op het clear net snel is toegenomen in de afgelopen jaren. Een studie uit 2008 telde 60 NPS webshops in de EU, in 2011 werden er 314 geteld en in 2013 wel 651. NPS zijn niet strafbaar gesteld in internationale drugsverdragen, maar kunnen wel mogelijk een gevaar vormen
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voor de volksgezondheid. NPS mogen online verkocht worden, mits webshops expliciet aangeven dat ze niet geschikt zijn voor consumptie. Uit eerder onderzoek bleek dat talloze dergelijke designer drugs (veelal onder de noemer van ‘research chemicals’) te koop worden aangeboden, zoals synthetische cannabinoïden, opioïden, tryptamines en benzodiazepines. Een precieze inschatting van het aantal gebruikers in Nederland dat deze middelen via het Internet aanschaffen, is echter niet mogelijk gebleken. Maar, volgens literatuur- en interviewgegevens lijkt de verkoop van NPS via clear net webshops minder prominent in Nederland dan in andere Europese landen. De Europese studie I-TREND heeft 19 Nederlandse webwinkels gevonden, in vergelijking met 207 Britse en 72 Poolse. De omzet van deze webshops blijft onduidelijk.
Het internet heeft geleid tot nieuwe business modellen voor drugshandel (Sectie 4.2) Uit ons onderzoek blijkt dat, net als in vele andere legale markten, het internet tot nieuwe business modellen voor drugshandel heeft geleid. Met de opkomst en ondergang van Silk Road 1.0 tussen 2011 en 2013 wonnen cryptomarkten snel aan populariteit. Een maand voordat Silk Road 1.0 werd neergehaald door de FBI, schatten onderzoekers de maandelijkse omzet van drugshandel op meer dan $7 mln. Sindsdien hebben we cryptomarkten zien verschijnen en weer verdwijnen, vaak na exit scams door de eigenaars zelf of door het neerhalen door de politie. Als onderdeel van deze studie hebben we zo’n 50 actieve cryptomarkten en webshops geïdentificeerd op het dark web. Negentien daarvan hebben elk ten minste 400 advertenties. De drie grootste markten, AlphaBay, Nucleus en Dreammarket, bevatten ongeveer 65 procent van alle advertenties voor alle producten en diensten tezamen. Voor deze studie hebben we informatie van acht van de 50 markten gescrapet. Deze acht markten hadden in totaal 105.811 advertenties (voor zowel drugs als andere producten en diensten), wat neerkomt op ongeveer 80 procent van de advertenties op alle 50 cryptomarkten en webshops.
Maandelijks wordt tussen de 14 tot 25 miljoen dollar aan drugs omgezet op cryptomarkten (Sectie 4.4) Uit ons onderzoek blijkt dat van alle advertenties op de acht geanalyseerde cryptomarkten, het in 57 procent van de advertenties om drugs gaat. Onze resultaten geven aan dat de totale maandelijkse omzet op deze markten minimaal $14.2 mln (€12.6 mln) is. Wanneer medicijnen, alcohol en tabak worden weggelaten is de omzet $12.0 mln (€10.6 mln). Vanwege de beperkingen in de methode (uitgelegd in Sectie 2.3.2), verschaffen deze cijfers een ondergrens voor de schatting van de totale omzet. De maximum schatting voor de maandelijkse drugsomzet op alle cryptomarkten komt uit op $25.0 mln (€22.1m), of $21.1m (€18.7) zonder medicijnen, alcohol en tabak. Ondanks verschillende interventies en verstoringen door de politie en verschillende exit scams, bestaan cryptomarkten nog steeds. Het dark web vormt niettemin een nichemarkt voor drugs, want cryptomarkten vertegenwoordigen slechts een fractie van de totale drugsmarkt. Terwijl de totale waarde van de Europese drugsmarkt geschat wordt op ten minste €2 miljard per maand (ten minste €24 mld per jaar in 2013), wijzen onze resultaten voor cryptomarkten wereldwijd slechts richting enkele tientallen miljoenen dollars. Ook in Nederland lijkt de omzet door Nederlandse drugverkopers op cryptomarkten een stuk lager dan de offline omzet.
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Cannabis, opwekkende middelen en xtc vormen 70 procent de omzet op cryptomarkten die in deze studie zijn geanalyseerd (Sectie 4.4) Onze bevindingen laten zien dat er enige continuïteit bestaat in de verhouding waarin verschillende typen drugs worden verkocht op cryptomarkten (op basis van zowel transacties als omzet) sinds 2013. Cannabis levert nog steeds de hoogste omzet op met 31 procent van de totale drugshandel, gevolgd door opwekkende middelen (24 procent, waaronder cocaïne en amfetamine), xtc-achtige drugs (16 procent, waaronder xtc en MDMA), psychedelica (8 procent) en opioïden (6 procent, inclusief heroïne). Het marktaandeel van deze verschillende typen drugs op cryptomarkten is vergelijkbaar met dat in de offline wereld, met name voor opwekkende middelen en cannabis. Wat xtc-achtige drugs betreft, lijken deze echter veel populairder op cryptomarkten dan op straat, want het totale offline marktaandeel in Europa voor xtc is slechts 2 procent. Voor heroïne geldt het omgekeerde. Dit heeft een marktaandeel van ongeveer 28 procent in Europa, terwijl uit onze resultaten blijkt dat het marktaandeel van niet- voorgeschreven opioïden (voornamelijk heroïne) vrij gering is (6 procent). Samenvattend zijn het met name de party drugs of recreatieve middelen (cannabis, xtc, psychedelica) die cryptomarkten domineren. Een mogelijke verklaring voor de verschillen tussen de ‘online’ en ‘offline’ markten kan zijn dat dergelijke aankopen via cryptomarkten doorgaans enige planning vereisen, hetgeen wellicht minder goed past bij het patroon van dagelijks gebruik door bijvoorbeeld heroïneverslaafden.
Hoe verhoudt dit zich tot de begintijd van cryptomarkten?
Cryptomarkten zijn behoorlijk, maar niet explosief gegroeid in de afgelopen paar jaar (Sectie 4.8) Cryptomarkten hebben zich bestand getoond tegen ingrijpen door politie- en overige handhavingsdiensten. Meteen na de ondergang van Silk Road 1.0 in 2013 zagen nieuwe marktplaatsen het levenslicht en deze wonnen snel aan marktaandeel. Maar dit onderzoek laat zien dat drugshandel via cryptomarket sindsdien niet explosief, maar geleidelijk is toegenomen. In vergelijking met analyse van Silk Road data uit september 2013, blijkt dat het markaandeel van de verschillende typen drugs niet wezenlijk is veranderd in 2016. De omzet is sindsdien verdubbeld en het totaal aantal transacties is verdrievoudigd. Cryptomarkten bevatten 5.5 keer zoveel advertenties voor drugs.
Nog steeds niet alleen een eBay voor drugs (Sectie 4.5) Advertenties voor kleine hoeveelheden, onder de $100, vormen het grootste deel van de transacties op de acht geanalyseerde cryptomarkten. Deze transacties dienen hoogstwaarschijnlijk alleen voor persoonlijk gebruik. Deze retail-transacties leveren echter slechts 18 procent van de totale omzet. Dit onderzoek toont aan dat transacties van groothandelhoeveelheden (boven de $1000) nog steeds belangrijk zijn op cryptomarkten. Ze leverden zowel in september 2013 als in januari 2016 bijna een kwart van de totale omzet. De veelgebruikte analogie “een eBay voor drugs” is daarom niet helemaal juist, aangezien eBay bedoeld is als eCommerce platform voor business-to-consumer (B2C) verkoop. Dit is een belangrijke bevinding. Handel op cryptomarkten faciliteert namelijk niet alleen gebruikers toegang tot een breed scala aan middelen. Maar, op basis van het aantal transacties van groothandelhoeveelheden kan men concluderen dat ook veel drugsdealers zich op cryptomarkten begeven om hun voorraad aan te vullen bestemd voor de offline detailhandel. Zodoende kunnen cryptomarkten ook een rol spelen in het verspreiden van een breed scala aan middelen naar lokale offline drugsmarkten.
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Volgens andere studies zijn er ook voor webshops op het clear net indicaties dat NPS online worden gekocht in groothandelhoeveelheden, die vervolgens in kleine hoeveelheden worden doorverkocht of verspreid als sociale distributie.
Er hebben zich de afgelopen jaren enkele ontwikkelingen voorgedaan op cryptomarkten (Sectie 3.2) Wederzijds vertrouwen tussen verkopers, kopers en beheerders is van cruciaal belang voor het succes van cryptomarkten. Maar dit vertrouwen heeft volgens waarnemers door een reeks lekken in de beveiliging van markplaatsen, voorbeelden van oplichting (scams) en verstoringen en ingrijpen door de politie een deuk opgelopen. Deze gebeurtenissen hebben hun weerslag gehad op de levensduur van individuele cryptomarkten. Desalniettemin heeft dit gereduceerde vertrouwen niet geleid tot een daling van de drugshandel via online marktplaatsen. Door nieuwe innovaties en technologische ontwikkelingen blijft de online drugshandel zich gestaag uitbreiden. Sommige van deze technische innovaties op cryptomarkten zijn gericht op het verminderen van het risico van oplichting voor zowel verkopers als kopers. Hoewel het nog niet op grote schaal wordt gebruikt, vereist het zogenoemde multi-signature escrow dat twee van de drie partijen een transactie goedkeuren. Dat maakt het onmogelijk voor een partij om in zijn eentje met geld te verdwijnen. Verder zijn hier en daar gedecentraliseerde markten ontstaan op basis van peer-to-peer systemen. Deze ontwikkeling staat ook nog in de kinderschoenen, maar dergelijke markten kunnen het risico van exit scams en mogelijk ingrijpen door de politie verminderen, aangezien het onmogelijk zal zijn om het hele systeem neer te halen. Tot slot, het risico van exit scams en de angst dat politiediensten markten zullen neerhalen heeft sommige verkopers ertoe gedreven hun eigen webshop op te zetten op het dark web. Ook bestaan er aanwijzingen dat verkopers hun potentiële klanten benaderen via (versleutelde) email of directe berichten buiten de cryptomarkten om.
Gangbare routes en de rol van Nederland
Verkopers in Angelsaksische landen of West-Europa leveren de meeste omzet (Sectie 5.1) We hebben de routes geanalyseerd van drugs verkocht via cryptomarkten en daarin hebben we in het bijzonder naar de rol van Nederland gekeken. Drugsverkopers op cryptomarkten lijken vanuit tientallen verschillende landen te opereren. Verkopers geven op hun advertenties aan van waaruit de producten worden verstuurd. Deze informatie hebben we als proxy gebruikt voor het thuisland van verkopers. Verkopers die aangeven dat ze de drugs vanuit Nederland verzenden, beschouwen we dus als ‘Nederlandse verkopers’. Dit leidt mogelijk tot een onderschatting van het aantal Nederlandse verkopers, omdat er aanwijzingen zijn dat sommige Nederlandse verkopers hun drugs vanuit het buitenland versturen. Schijnbaar gaan verkopers in dit geval de grens over om vanuit Duitsland of België de pakketjes op de post te doen. Voor zover bekend hebben cryptomarkten zich voornamelijk gemanifesteerd in de Angelsaksische wereld en West-Europa. De meeste verkopers geven aan te opereren vanuit de Verenigde Staten (890), gevolgd door het Verenigd Koninkrijk (338) en Duitsland (225). Maar gezien hun rol in de productie van met name NPS zouden Aziatische landen, zoals India en China, ook vruchtbare voedingsbodems voor deze markten kunnen zijn.
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Verkopers die aangeven dat ze vanuit de Verenigde Staten drugs verzenden, genereren 36 procent van de totale drugsomzet op de geanalyseerde cryptomarkten. Vergeleken met bevindingen uit 2013 is het marktaandeel van verschillende landen niet veel veranderd, met uitzondering van Australië. Het aandeel van Australische verkopers is namelijk in de afgelopen drie jaar flink gestegen. Andere Angelsaksische (Canada en het Verenigd Koninkrijk) alsmede West-Europese landen (Nederland, Duitsland, Spanje, Frankrijk) leveren ook een substantieel aandeel. Wanneer we verkopers met elkaar vergelijken, is de omzet per verkoper het grootst in Australië. Dit is waarschijnlijk te verklaren doordat de prijzen van drugs in Australië aanzienlijk hoger liggen dan in de overige landen, hetgeen zich waarschijnlijk vertaalt naar een hogere omzet voor verkopers.
De ‘Nederlandse’ drugsomzet is verreweg het grootst per hoofd van de bevolking (Sectie 4.4) Verkopers die aangeven dat ze vanuit Nederland handelen zijn verantwoordelijk voor 8 procent van de totale drugsomzet op de acht geanalyseerde markten. Per hoofd van de bevolking is die omzet 2.4 keer zo groot als de omzet uit het Verenigd Koninkrijk en 4.5 keer zo groot als die van de Verenigde Staten. Dat is misschien niet verwonderlijk gezien de belangrijke rol van Nederland in de productie en doorvoer van drugs in Europa. ‘Nederlandse verkopers’ lijken zich te specialiseren, aangezien driekwart van alle inkomsten gegenereerd door twee typen drugs: xtc-achtige drugs (bijna de helft) en opwekkende middelen (een kwart). Dit patroon lijkt een weerspiegeling van de rol van Nederland in de productie van deze typen drugs. Online verkopers hebben redelijk eenvoudig toegang tot deze middelen en het is bovendien winstgevend vanwege de korte afstand tot productie. Stoffen zoals MDMA kunnen goedkoop in eigen land worden geproduceerd en vervolgens tegen hogere (internationale) prijzen worden doorverkocht. Deze specialisatie is zelfs nog duidelijker als men enkel kijkt naar groothandelhoeveelheden. 82 procent van alle opbrengsten voor ‘Nederlandse’ advertenties van meer dan $1,000 worden gegenereerd door xtc- achtige drugs en opwekkende middelen.
‘Nederlandse verkopers’ spelen nauwelijks een rol in verkoop van cannabis op cryptomarkten (Sectie 4.4) Onze resultaten tonen aan dat het aandeel van de ‘Nederlandse verkopers’ in de cannabisverkoop op de acht cryptomarkten relatief klein is. In elk geval een stuk kleiner dan kan worden verwacht gezien de internationaal prominente rol van Nederland in de wietteelt en in de doorvoer van hasj. Cannabis zorgt slechts voor 10 procent van de totale Nederlandse drugsomzet via cryptomarkten. ‘Nederlandse verkopers’ verzenden ongeveer 11 kilo per maand, slechts 2 procent van de totale omzet voor cannabis die wij hebben vastgesteld op cryptomarkten.
De meest gangbare routes voor drugs via cryptomarkten zijn intra-continentaal (Sectie 5.2) Onze resultaten tonen dat de Verenigde Staten en Oceanië (Australië en Nieuw Zeeland) de twee meest populaire bestemmingen zijn voor drugs op cryptomarkten. Dat wil zeggen, het verkopers zijn graag bereid om drugs daar naartoe te verzenden. Europa komt op de derde plaats met ongeveer $800.000 in omzet van drugs. Het was echter een uitdaging voor deze studie om de populaire routes goed in kaart te brengen. Meer dan de helft van alle drugsomzet heeft een onbekende bestemming. De meest gangbare routes voor drugs zijn die binnen de Verenigde Staten, binnen Europa en binnen Oceanië. Het aandeel van verschillende landen in de drugsroutes valt moeilijk nauwkeurig in te schatten.
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Er is weinig informatie over de vraagkant van online gekochte drugs (Sectie 5.2) Met betrekking tot de vraagkant van online gekochte drugs in Nederland bevat de literatuur weinig informatie. Er zijn slechts enkele studies naar de herkomst van geconsumeerde drugs en die leveren weinig tot geen bewijs over de aanschaf van drugs via internet door Nederlandse consumenten. De verzamelde data voor deze studie hebben evenmin veel nieuwe inzichten opgeleverd. De gescrapete cryptomarktgegevens bevatten geen informatie over de locatie van kopers, enkel over de landen of continenten waarnaar verkopers bereid zijn hun producten te verzenden. Er waren nauwelijks advertenties door ‘Nederlandse verkopers’ die enkel binnen Nederland wilden verzenden. Inlichtingen van de handhavingsdiensten lijken te bevestigen dat Nederlandse online drugsverkopers voornamelijk aan klanten in het buitenland leveren. Nederlandse cryptomarktconsumenten daarentegen lijken volgens deze inlichtingen voornamelijk drugs uit eigen land kopen.
Er worden ook andere drug-gerelateerde producten en diensten aangeboden, maar de omzet daarvan is relatief laag (Sectie 4.7) Cryptomarkten worden gedomineerd door drugs. Er zijn ook advertenties voor andere producten en diensten, bijvoorbeeld die ter ondersteuning van de productie, levering of gebruik van drugs kunnen dienen. Hierbij kan gedacht worden aan vervalste identiteitsbewijzen, financiële producten en diensten, of apparatuur voor productie. Maar ze brengen relatief weinig geld op. De totale omzet van deze drugs- gerelateerde producten en diensten in januari 2016 was ongeveer 0.2 procent van de totale drugsverkoop. Slechts één op de drie verkopers bood andere producten aan dan drugs en over het algemeen verkochten ze niet ook drugs daarnaast. Nederlandse verkopers op cryptomarkten, daarentegen, verkopen vrijwel altijd drugs.
Actoren en hun modus operandi
De belangrijkste actoren zijn administrators, moderators, ontwikkelaars, verkopers en kopers (Sectie 6.1) Naast het inschatten van de omvang van cryptomarkten geeft dit rapport ook een karakterisering van de verschillende actoren die betrokken zijn bij deze markten. Er zijn verschillende actoren die (bewust of onbewust) betrokken zijn bij internet-gefaciliteerde drugshandel. Op cryptomarkten zijn de volgende actoren te onderscheiden: administrators (uitvoerend management en penningmeester), ontwikkelaars (web design en onderhoud), moderators (medewerkers op de markt), verkopers en kopers. Andere actoren die een ondersteunende rol kunnen spelen (en zich mogelijk niet bewust zijn van hun betrokkenheid) zijn bitcoin wisselaars, Internet Service Providers, leveranciers van legale producten en postdiensten. In dit onderzoek zijn twee actoren (verkopers en kopers) verder uitgelicht. Deze analyse is gebaseerd op literatuuronderzoek, interviews en gegevens uit de Nederlandse politiedossiers.
Hoewel gebaseerd op beperkt bewijs is het aannemelijk dat verkopers jonge mannen zijn uit Engels sprekende of West-Europese landen (Sectie 6.2) Uit beperkt bewijs blijkt dat drugsverkopers op cryptomarkten vaak relatief jonge (onder de 40), opgeleide, IT-vaardige en ondernemingsgezinde mannen zijn afkomstig uit Angelsaksische en West- Europese landen. Engels is de meest gebruikte taal op cryptomarkten, al communiceren sommige verkopers ook in andere talen. Op online drugsmarkten handelen zowel professionele drugsdealers die nauwe banden hebben met de productieketen en de online verkoop van drugs als een extra
xix RAND Europe Internet-facilitated drugs trade inkomstenbron zien als newbies die tot dusver alleen drugs aan vrienden verkochten. Financiële, libertijnse en veiligheidsmotieven liggen ten grondslag aan het besluit om drugs online te verkopen. We hebben geen studies gevonden die informatie bieden over de karakteristieken van verkopers die betrokken zijn bij drugshandel op het clear net.
Kopers worden aangetrokken tot cryptomarkten vanwege een gevoel van verhoogde veiligheid, verbeterde kwaliteit van en diversiteit aan drugs en gemak en snelheid van bezorging (Sectie 6.3) Uit beperkt bewijs blijkt dat kopers op cryptomarkten ook vaak relatief jonge (onder de 40), opgeleide en IT-vaardige mannen uit Angelsaksische en (andere) Europese landen zijn. De meerderheid lijkt te bestaan uit recreatieve drugsgebruikers - sommige beschouwen zichzelf als ‘psychonauten’ - die eerder drugs hebben gebruikt. Kopers lijken verschillende motieven te hebben voor de aanschaf van drugs op online marktplaatsen: een gevoel van verhoogde veiligheid ten aanzien van offline aankopen, verbeterde kwaliteit van en diversiteit aan drugs, anonimiteit, en het gemak en de snelheid van levering. Uit eerder onderzoek blijkt dat kopers tevens de transparantie en volledigheid van productinformatie op cryptomarkten waarderen. Kopers hebben de neiging hun aankopen te baseren op prijs, beschikbare tripverslagen, productdetails, reputatie van verkopers en feedback van andere kopers. Er is momenteel onvoldoende bewijs om definitieve conclusies te trekken over de vraag of de aanwezigheid van online drugsmarkten leidt tot nieuwe actoren die voorheen geen drugs offline kochten of verkochten. Er is tevens onvoldoende bewijs om definitieve conclusies te trekken over de vraag of online drugsmarkten de offline drugsmarkten vervangen.
Wijzen van opsporing en interventie
Er zijn vier brede categorieën van opsporing en interventie (Hoofdstuk 7) Naast preventie en schadebeperking is rechtshandhaving een van de drie pijlers van het Nederlandse drugsbeleid. Anekdotisch bewijs uit de literatuur en interviews geeft aan dat rechtshandhaving een impact heeft gehad op het vertrouwen binnen cryptomarkten. Over het algemeen is de omvang van drugshandel op deze markten echter gegroeid. Eerder onderzoek toont aan dat het verplaatsen van verkopers en kopers naar andere, bestaande cryptomarkten het voornaamste gevolg was van het neerhalen van cryptomarkten. Er wordt verondersteld dat de negatieve impact van scams op het vertrouwen binnen deze online markten misschien wel groter is dan wat rechtshandhaving zou kunnen bereiken. In een aantal artikelen en interviews wordt gewezen op de potentiële voordelen van internet-gefaciliteerde drugshandel in het verminderen van schade geassocieerd met drugsmarkten. Op basis van gegevens uit de interviews en literatuur hebben wij vier brede categorieën op het gebied van opsporing en interventie van internet-gefaciliteerde drugshandel geïdentificeerd: 1. Traditionele onderzoekstechnieken die toegepast worden op de drugsketen (bijv. observaties, undercover operaties); 2. Het opsporen en onderscheppen van post (bijv. samenwerking tussen wetshandhavingsinstanties en postdiensten); 3. Online detectie (bijv. big data technieken, het monitoren van online marktplaatsen, het volgen van geldstromen); en 4. Online verstoring (bijv. neerhalen van online marktplaatsen).
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Internationale samenwerking en coördinatie (en de bijbehorende juridische vraagstukken), capaciteit en middelen, en (technische) mogelijkheden kunnen een faciliterende rol spelen bij het implementeren van bovenstaande strategieën.
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Summary
Over the past two decades, the Internet has had a transformative effect on business models in numerous sectors. e-Commerce has improved efficiency of supply chains, facilitated market access and improved transparency for consumers. The potential role of the Internet in facilitating illicit drugs trade was first highlighted by the success of Silk Road; the first major online market place for illegal goods on the dark web. Silk Road was taken down by the FBI in October 2013, but other, very similar markets filled the void within weeks. Today, there are purportedly around 50 so-called cryptomarkets and vendor shops that can only be accessed by using encryption software to ensure anonymity. We use the term ‘cryptomarkets’, but we note that the term ‘dark net markets’ (DNMs) also becomes more established. Cryptomarkets look similar to regular online market places, such as eBay or Amazon, by allowing their customers to search and compare products and rate vendors. These markets bring vendors and buyers together acting under pseudonyms to trade illegal drugs, new psychoactive substances (NPS), prescription drugs and other, often illegal, goods and services. It is not just the obscure parts of the Internet where drugs are on offer. There are numerous web shops on the clear net, easily found by search engines, which offer mostly NPS, also known as designer drugs that have not been officially banned (yet). The Netherlands occupies a crucial position in European illicit drug markets. Data from the European Monitoring Centre for Drugs and Drug Addiction (EMCDDA) suggested it is the main producer of ecstasy and herbal cannabis and a key distribution hub for cannabis resin and cocaine. Whether the pivotal role of the Netherlands also extends to the drugs trade facilitated by the Internet has yet been unclear. While there has been considerable attention paid to the role of the Internet in facilitating drug market from media outlets, the evidence on their size, shape and evolvement is fairly limited.
Objectives and methodologies
The study aims to investigate the size and scope Internet-facilitated drugs trade (Section 1.1) This report aims to investigate the role of the Internet in facilitating drugs trade. It is commissioned by the Research and Documentation Centre (Wetenschappelijk Onderzoek- en Documentatiecentrum, WODC), the independent research arm of the Ministry of Security and Justice in the Netherlands. Special attention will therefore be paid to the role of Dutch actors in facilitating this trade. The overall aims of this study are: • To characterise the scope and the size of Internet-facilitated drugs trade; • To identify the role of the Netherlands in Internet-facilitated drugs trade; and
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• To delineate potential avenues for law enforcement for detection and intervention The study considers trade via cryptomarkets as well as drugs trade facilitated by the clear net. For reasons explained below, the emphasis of the quantitative analysis is on cryptomarkets.
We used a mix of qualitative and quantitative methods (Chapter 2) In order to address these objectives, a mix-of quantitative and qualitative methods was applied, consisting of: a review of the literature; in-depth interviews with experts and law enforcement representatives; collection and analysis of cryptomarket data; and a review of police case files. The emphasis of this study was on drugs trade via cryptomarkets. The quantitative assessment of the size and scope of this phenomenon was conducted through collection and analysis of scraped data from eight of the largest cryptomarkets in January 2016. Ironically, it is more straightforward for the researchers to obtain data via web scraping/crawling techniques deployed on cryptomarkets than on the clear net. These techniques identify all pages on a web domain and extract the relevant information. First, because the number of available cryptomarkets is much smaller than that of NPS web shops. And second, because scraped data from the clear net tell us only about substances listed for sale there and their prices, and not the extent to which sales occur. On cryptomarkets, the number of feedbacks can be used as a proxy for transactions. The quantitative findings were complemented with and compared to findings from the literature, interviews with experts and law enforcement officials and a focus group with law enforcement representatives. Trade of NPS via clear net market places was primarily investigated through literature review and interviews. Where possible, the results were illustrated with findings from analysis of Dutch police case files relating to Internet-facilitated drugs trade.
The size and shape of Internet-facilitated drug markets
On the clear net the size of the online market for NPS is unclear, but the number of web shops has grown considerably in recent years (Sections 4.2.2 and 5.1.4) We were unable to learn as much about the undoubtedly growing clear net sales of legal substances, compared to sales via cryptomarkets. The research literature here is comparatively limited (in spite of the fact that these markets have existed for longer than cryptomarkets). Nevertheless, we conclude from our analysis that the availability of NPS via web shops on the clear net has increased quickly in recent years. Previous studies identified 60 web shops in the EU in 2008, 314 in 2011 and 651 in 2013. NPS are not controlled by the international drug conventions, but they may pose a public health threat. They can be sold online, provided web shops indicate explicitly that they are not intended for human consumption. Previous research found that numerous different types of designer drugs (often labelled as research chemicals) were offered for sale, including synthetic cannabinoids, opioids, tryptamines, and benzodiazepines. The size of the buyer population is unclear. Based on literature and interview data, sales of NPS via clear net web shops seemed to be less prominent in the Netherlands than in other European countries. The EU-funded I-TREND study found 19 shops operating from the Netherlands, compared to 207 from the UK and 72 from Poland. These markets are generating an unknown amount of revenue.
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The Internet has created new business models for drugs trade (Section 4.2) Overall, we found that – similar to many markets for licit goods – the Internet has created new business models for drugs trade. Cryptomarkets quickly gained popularity between 2011 and 2013 with the rise and fall of Silk Road 1.0. A month before it was taken down by the FBI, researchers estimated monthly revenues for drugs trade on Silk Road 1.0 at more than US$7m. Since then, cryptomarkets have appeared and disappeared again, often following exit scams or take downs. As part of this study, we identified about 50 live cryptomarkets and single-vendor shops on the hidden web. Some 19 of them had at least 400 listings each. The three largest markets, AlphaBay, Nucleus, and Dreammarket, accounted for about 65 per cent of all listings across all products and services. Some eight of the 50 markets identified were scraped for this study, and these eight sites had 105,811 listings (across all products and services), approximately 80 per cent of all listings across all 50 cryptomarkets.
Monthly revenues from drugs on cryptomarkets are in the double-digit million dollars (Section 4.4) Of all products and services on offer, we found that 57 per cent of listings across the scraped cryptomarkets offered drugs. Our results indicate the eight cryptomarkets analysed for the study generate a total monthly revenue of $14.2m (€12.6m) and $12.0m (€ 10.6m) when prescription drugs and alcohol and tobacco are excluded. These figures represent a lower-boundary estimate, due to some limitations of our approach (explained in Section 2.3.2). An upper-boundary estimate for monthly drug revenues via visible listings on all cryptomarkets would be $25.0m (€22.1m), or $21.1m (€18.7) without prescription drugs, alcohol and tobacco. So, despite law enforcement intervention and various exit scams on these marketplaces, cryptomarkets have survived. Yet, they represent a niche part of drugs trade at large, as they constitute a fraction of the total drug market in the offline world. Whereas the total retail value of the European drug market is estimated to amount at least €2bn per month (i.e. at least €24bn annually in 2013), our data suggested monthly revenues for international cryptomarkets in double-digit million dollars. Similarly, for the Dutch context, revenues for ‘Dutch vendors’ on cryptomarkets appeared to be much lower than offline revenues.
Cannabis, stimulants and ecstasy are responsible for 70 per cent of all revenues on cryptomarkets included in this study (Section 4.4) Our findings indicate that the types of drugs sold on cryptomarkets and their relative importance as assessed by sales (transactions and revenues) showed continuity since 2013. Cannabis still generated highest revenues, 31 per cent of all drugs revenues, followed by stimulants (24 per cent, including cocaine and amphetamines), ecstasy-type (16 per cent, including ecstasy and MDMA), psychedelics (8 per cent) and opioids (6 per cent, including heroin). These revenue shares seem to mimic the retail value of different drug types in the offline world, particularly for stimulants and cannabis. Ecstasy-type drugs, however, appeared to be much more popular on cryptomarkets than out on the street, as it only constitutes about 2 per cent of the total European retail value. On the other hand, estimates suggested that heroin takes up around 28 per cent of the total European drugs retail market, whereas our results suggest that the market share of non-prescription opioids (mostly heroin) remains fairly small (6 per cent). In sum, for online markets there is a predominance of drugs typically associated with recreational or ‘party’ use (cannabis, ecstasy, psychedelics).
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A possible explanation for these differences between ‘online’ and ‘offline’ markets may be that cryptomarket purchases typically require an element of planning, which may not suit the daily use of dependent users of, for instance, heroin.
How does this compare to the early days of cryptomarkets?
Cryptomarkets have grown substantially in the past few years, but not explosively (Section 4.8) Drugs trade via cryptomarkets has shown to be resilient to law enforcement intervention and distortion, as new market places quickly emerged and gained market share. Since the heyday of Silk Road 1.0 in 2013, however, we conclude that the evolution of drugs trade via cryptomarkets is one of incremental change, rather than explosive. Comparing to results from Silk Road data scraped by members of our team in September 2013, we found that the distribution of drugs types was very similar in 2016. Revenues have about doubled since then, and the total number of transactions has tripled. The number of listings for drugs has grown by 5.5 times.
Still not just an eBay for Drugs (Section 4.5) The lion’s share of transactions on cryptomarkets scraped for this study is generated by listings under $100, most likely to be for personal use. But these retail transactions generate only 18 % of total revenues. We found that large ‘wholesale’ level transactions (those greater than $1,000) remained important for cryptomarkets, generating nearly one quarter of overall revenue both in September 2013 and in January 2016. The often-used analogy ‘an eBay for drugs’ is not entirely correct, because eBay is intended as an online retail market. This is an important finding. Cryptomarket trade may have an impact beyond creating a new way for drug users to access a wide range of drugs; based on the extent of wholesale transactions, we believe it is likely that many cryptomarket customers are drug dealers sourcing stock intended for offline distribution. Cryptomarkets may therefore be diffusing a wide range of substances into local offline drug markets. For clear net markets, there are some indications based on previous studies that NPS are purchased in wholesale quantities online for the purpose of retail or social supply.
Since the early days of Silk Road 1.0, we have observed a number of trends on cryptomarkets (Section 3.2) Trust between vendors, buyers and administrators has been considered important for the success of cryptomarkets and their vendors. However, following a series of security failures, scams and law enforcement disruptions and interventions, observers reported declining levels of trust between actors. These may have impacted on the longevity of individual cryptomarkets. Nevertheless, the environment of reduced trust did not appear to have prevented the drugs trade on online marketplaces, and new innovations and developments appeared to have arisen, allowing trade to flourish in spite of these challenges. Some technical innovations implemented on cryptomarkets are aimed at reducing the risks to vendors and buyers of scams. For example, although not yet widely adopted, multi-signature escrow requires sign-off from two out of three parties, which makes it impossible for one party to single-handedly retrieve funds and disappear. Decentralised markets that operate using a peer-to-peer system, while still in their infancy, have the potential to reduce the possibilities of law enforcement disruption and intervention, as it will be
xxvi Internet-facilitated drugs trade RAND Europe impossible to take the entire system down. Finally, exit scam risk and fear of law enforcement take down have led some vendors to establish single-vendor shops and to encourage potential buyers to approach them via (encrypted) email or direct messaging.
Shipping routes and the role of the Netherlands
Most revenues are generated by vendors who indicate they are operating from Anglo-Saxon countries or Western Europe (Section 5.1) We undertook analysis to understand shipping routes via cryptomarkets and the role of the Netherlands in particular. Cryptomarket vendors appeared to be shipping from dozens of countries. For this study we use vendors who self-report that they are shipping from the Netherlands as a proxy for ‘Dutch vendors’. This could be an underestimate, as there are indications that some ‘Dutch vendors’ also offer listings that ship from outside the Netherlands. In this case, vendors would drive across a border to ship from neighbouring countries like Germany. To our knowledge, and that of the literature, cryptomarkets have primarily manifested themselves in the Anglo-Saxon world and Western Europe. Most vendors appeared to be operating from the United States (890), followed by the United Kingdom (338), and Germany (225). But given their role in production, Asian countries (such as China and India) may also be fertile breeding ground for online drug sales. Vendors indicating they ship from the United States generate 36 per cent of all drug revenues within our sample. Compared to findings in 2013, the distribution of revenues across countries has not changed much with the exception of Australia, which has seen its share of revenues increase over the past three years. Other Anglo-Saxon (Canada and the United Kingdom) as well as Western European countries (the Netherlands, Germany, Spain, France) also generate substantial proportions of revenues. When comparing per vendor, Australia appeared to generate most revenues per vendor. This is in line with the vastly higher prices of drugs in Australia, which probably translates to higher prices per unit.
Revenues from vendors operating from the Netherlands are by far the largest on a per capita basis (Section 4.4) Revenues to vendors reporting to operate from the Netherlands accounted for 8 per cent of total drug revenues from the eight markets monitored. On a per capita basis, revenues to vendors operating from the Netherlands were 2.4 times higher than those from the United Kingdom and 4.5 higher than those from the United States. This perhaps is not surprising given its important role in production and transit of drugs in Europe. Vendors likely to be based in the Netherlands showed clear patterns of specialisation in our analysis, with three quarters of all revenue generated in two drug categories: ecstasy-type drugs (accounting for nearly half of all revenue for these vendors) and stimulants (another quarter). It likely reflects the Netherlands’ role in the production of these drug types, making vendor access to these substances relatively easy and also profitable given their location in the supply chain. Substances, such as MDMA, can be produced inexpensively domestically and then resold for higher prices in other countries. At the wholesale level, this specialisation became even greater, with ecstasy-type and stimulants accounting for 82 per cent of all wholesale revenue for ‘Dutch vendors’.
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‘Dutch vendors’ hardly play a role in Cannabis sales (Section 4.4) Contrary to observations made by various interviewees our results suggested that the share of ‘Dutch vendors’ in cannabis sales within the eight cryptomarkets is smaller than might be expected, given the prominent role of the Netherlands in herbal cannabis production and the transit of cannabis resin. We found that only 10 per cent of drugs revenues for ‘Dutch vendors’ was generated by cannabis and ‘Dutch vendors’ shift about 11 kilos a month, just 2 per cent of the total volume of cannabis we identified on cryptomarkets.
The most common shipping routes for drugs are intra-continental (Section 5.2) We found that the United States and Oceania (Australia and New Zealand) were the two most common destinations for vendors who specified where they are willing to ship to. Europe came in third position with about $800,000 in drug revenues. However, it should be noted that it was challenging in this study to trace shipping routes, since more than half of all drug revenues have an unknown destination. The most common routes for drugs were those within United States, within Europe and within Oceania. Here again, given that incomplete or unknown routes account for more than a third of all drug revenues, it was difficult to precisely estimate the share of drug shipping routes.
There is little evidence on the proportion of drugs consumed that are purchased online (Section 5.2) We could find little evidence from previous research and from the new data collected for this study of the demand side for Internet-purchased drugs in the Netherlands. Scraped cryptomarket data only contained information about the destinations that vendors are willing to ship to. There was no information about buyer locations. Almost no listings were posted by ‘Dutch vendors’ that targeted only customers in the Netherlands. Intelligence from law enforcement seems to confirm that ‘Dutch vendors’ primarily sold to buyers abroad, while Dutch buyers predominantly purchased drugs domestically. The limited number of studies that reported on consumers buying drugs online found little to no evidence that Dutch customers were using the Internet to buy drugs.
Products and services that can be used to support drug productions, supply or use are available, but revenues are comparatively low (Section 4.7) Products and services that might be used to support drug production, supply and use, such as counterfeit IDs, financial products and services, or production equipment are also listed on cryptomarkets. They generate sales, albeit in negligible amounts in comparison to drugs themselves. We found that the total revenue generated by these products and services in January 2016 was about 0.2 per cent of the amount generated by drug sales. Only about one in three vendors included in our sample sold non-drug products and services, and these vendors did not tend to also sell drugs. Dutch vendors are nearly absent in this business.
Actors and their modus operandi
The main actors are administrators, moderators, developers, vendors and buyers (Section 6.1) In addition to estimating the size of cryptomarkets, this report presents a characterisation of the different actors involved in these markets, to feed into the broader understanding of Internet-facilitated drugs
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trade. There are several actors (knowingly or unknowingly) involved in Internet-facilitated drugs trade, with key actors on cryptomarkets ranging from administrators (executive management and treasurer), developers (web design and maintenance) and moderators (staff members on the marketplace) to vendors and buyers selling and purchasing on these marketplaces respectively. In addition, other actors that play a supporting role (and may not be aware of their involvement) include bitcoin exchangers, Internet Service Providers, suppliers of legal goods and postal services. Vendors and buyers were analysed in more detail, based on literature, interviews and case file data.
Evidence is limited, but vendors seemed to be young, males from English speaking or Western European countries (Section 6.2) Based on limited, sometimes anecdotal, evidence from the literature, interviews and case file analysis, it was found that vendors selling drugs on cryptomarkets seemed to be relatively young (under the age of 40), well-educated and entrepreneurial males from Anglo-Saxon countries or Western Europe with strong IT-skills. Although English was the dominant language on cryptomarkets, some vendors did communicate in other languages. Vendors seemed to be a mix of professional drug dealers with close ties to production who consider Internet sales as an additional revenue stream and ‘newbies’ who thus far only sold drugs to friends. Financial, libertarian and (perceptions of increased) safety motives underpin the decision to sell drugs online. There were no studies identified that provided information on the characteristics of vendors involved in clear net drugs trade.
Buyers are attracted to cryptomarkets because of perceived increased safety, improved quality and variety, ease and speed of delivery (Section 6.3) Similarly, evidence on the consumer side of Internet-facilitated drugs trade is limited. According to previous research and interviewees, buyers on cryptomarkets also seemed to be relatively young, educated and tech-savvy males from Anglo-Saxon and (other) European countries. The majority seemed to consist of recreational drug users (some considered themselves ‘psychonauts’), who have used drugs previously. Buyers seemed to be motivated to buy drugs online due to a perception of increased safety vis-à-vis offline purchases, and improved quality and product variety, anonymity and the ease and speed of delivery. Previous research found that buyers also appreciated the transparency and comprehensiveness of information on products available on cryptomarkets. They tended to base their purchases on price, available ‘trip reports’, products details, vendor reputation and feedback from other buyers. There is currently insufficient evidence to draw firm conclusions on whether the presence of online drug markets leads to new actors that previously would not have sold or bought drugs offline, or whether the offline market is substituted by online markets.
Modes of detection and intervention
There are four broad categories of modes of detection and intervention (Chapter 7) Law enforcement is one of three pillars of Dutch drugs policy, alongside prevention and harm reduction. Anecdotal evidence from the literature and interviews suggests that law enforcement activities have had an impact on confidence in cryptomarkets, but on aggregate, the size of trade has grown nonetheless. Previous studies concluded that the main consequence of bringing down marketplaces has been the
xxix RAND Europe Internet-facilitated drugs trade migration of vendors and customers to other existing cryptomarkets. It has been suggested that the negative impact of scams on trust within markets might be greater than what law enforcement action could achieve. Also, some authors and interviewees highlighted the potential benefits of Internet- facilitated drugs trade to reducing harms associated with drug markets. Based on interview and literature data, we identified four broad categories of potential strategies that are available to law enforcement in the detection and intervention of Internet-facilitated drugs trade: 1. Traditional investigation techniques applied in the drug chain (e.g. surveillance, undercover operations); 2. Postal detection and interception (e.g. collaboration between law enforcement agencies and postal services); 3. Online detection (e.g. big data techniques, monitoring of online marketplaces, tracking money flows); and 4. Online disruption (e.g. taking down online marketplaces). International cooperation and coordination (and the accompanying legal challenges), capacity and resources, and (technical) capabilities could play a facilitating role in deploying the different strategies to tackle Internet-facilitated drugs trade.
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Acknowledgements
The authors are grateful to a large number of individuals and organisations who contributed to this study by providing information, donated their time to be interviewed, provided steer or advice and/or commented on draft versions of this report. We would like to acknowledge some of them in no particular order. We are thankful to the members of the scientific steering committee assembled by the WODC, who offered their expertise, provided feedback on the methodology and research design and commented on the drafts. The steering committee consisted of: Prof dr Dirk Korf (chair, University of Amsterdam), Dr Arno Knobbe (Leiden University and Leiden Institute of Advanced Computer Science), Bas Doorn, Msc, (Netherlands Public Prosecution Service, Openbaar Ministerie), Lodewijk van Zwieten, LLM (Netherlands Public Prosecution Service, Openbaar Ministerie), Vincent van Beest, MA (Ministry of Security and Justice) and Olivier Hendriks (project manager, WODC). A large number of individuals contributed to the study by participating in expert interviews, interviews with law enforcement representatives, participating in a focus group or by providing written input by means of email correspondence. Those individuals who consented to being acknowledged are listed in Appendix E. Some preferred to be listed anonymously. We thank our peer reviewers as part of RAND’s quality assurance process, Dr Priscillia Hunt (RAND Corporation) and Dr Emma Disley (RAND Europe) for their helpful comments on draft versions of this report. Maurice Luxembourg (Nationale Politie) offered indispensable support in setting up the focus group and reviewed draft versions of the report and Bas Doorn has been instrumental in providing access to the case files. We are also grateful to our RAND colleagues Lilly Ablon, Erik Silfversten and Ryan Nathan for their helpful advice and suggestions. We acknowledge the contributions of Katharina Brecht for copy editing the manuscript. The research team has also benefited from the excellent research assistance of Matteo Barberi. Finally, we are grateful to Dr Nicolas Christin for offering his expertise and reviewing the approach and results of the cryptomarket data analysis.
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Glossary
Term Explanation/definition
Administrator The administrator sits ‘at the top of the cryptomarket hierarchy‘ and within this role has ‘full access to the cryptomarket’ (Martin 2014a, 18). The administrator has an executive and managing role on the marketplace, is responsible for the policies on the marketplace and ‘fulfils the role of treasurer with regard to cryptocurrency’ (Martin 2014a; Van Slobbe 2016, 79).
Buyer Customers on cryptomarkets buy goods on vendors’ seller pages, could provide feedback on these purchases and may be involved in discussions on forums (Martin 2014a).
Bitcoin The most well-known and popular crypto-currency or virtual currency, used on cryptomarkets to make purchases. On Silk Road, only Bitcoin was supported as a payment currency. Bitcoins are not issued by any government, bank or organisation, and can be purchased in person or through online exchanges such as CoinBase.
Crypto-currency ‘A peer-to-peer, client-based, completely distributed currency that does not depend on centralised issuing bodies (a ‘sovereign’) to operate. The value is created by users, and the operation is distributed using an open source client that can be installed on any computer or mobile device’ (Guadamuz & Marsden 2015) As a virtual asset, rather than traditional printed units of fiat money, cryptocurrency cannot be destroyed or lost completely and new units are impossible to create.
Crypto-exchangers Crypto-currencies can be purchased through online exchanges such as CoinBase.
Clear net (or clear The open part of the Internet that is indexed by search engines. web or surface web)
Clear net market or Business-to-customer shopfronts on the surface web or open Internet with typically one web shop vendor only. Clear net markets tend to sell primarily legal drugs.
Cryptomarket Online marketplace on the hidden part of the web that has been intentionally hidden and is inaccessible through standard web browsers. It sells illegal drugs and other goods and services and customers can search and compare products and prices across multiple vendors (EMCDDA, 2015a).
Customer feedback When making a purchase, customers are strongly encouraged to leave feedback. This feedback is posted underneath each listing and usually includes a date, a message (e.g. ‘great product, fast delivery, would repeat business’) and a score. Customer feedback as a proxy for transactions will always result in an extent of under-estimation of actual transactions (Aldridge & Décary-Hétu 2014; 2016a; Christin 2013; Soska & Christin 2015; , Décary-Hétu et al., forthcoming).
Dark net (or dark web The hidden part of the Internet that is not indexed by search engines (Aldridge & Décary- or hidden web) Hétu 2014; Martin 2014a).
Dread Pirate Roberts Pseudonym of Ross Ulbricht, creator and administrator of Silk Road 1.0 He was convicted
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of money laundering, computer hacking and conspiracy to traffic narcotics in February 2015.
Deep web Part of the Internet not accessible through traditional search engines (EMCDDA 2015a).
Developer Developers in the context of this report are primarily responsible for designing the technical infrastructure on online drug markets.
Drugs In this report we refer to drugs as the umbrella term of illicit drugs (such as heroin, cocaine, cannabis, amphetamine, methamphetamine and ecstasy), stimulants and synthetic drugs (NPS), excluding substances such as tobacco, prescription drugs and alcohol.
Encryption The process of taking data that is readable and making it unreadable by using algorithms to create complex codes out of simple data to block access to information (Cyber Experts Blog at National Cybersecurity Institute 2015).
Exit scam Scam whereby the site’s administrators suddenly take the market offline and steal users’ money kept in their escrow accounts (Woolf 2015).
Finalise early A circumvent escrow that ensures direct payment without funds first being held in escrow as a backup measure in times of high concerns for exit scams or law enforcement seizure, reducing the risk that vendors and buyers lose the funds held in escrow.
Escrow An arrangement in which the keys needed to decrypt encrypted data are held in escrow so that, under certain circumstances, an authorised third party may gain access to those keys. Payment is only released to the vendor when the buyer finalised the sale by indicating that the product had been delivered.
Internet Service Organisation that provides services for accessing and using the Internet. Provider (ISP)
Marketplace In the context of this study we refer to online marketplaces, which bring together multiple sellers in one location.
Moderator The moderator ‘are ranked below administrators in the cryptomarket hierarchy and assist with lower-level site maintenance and customer support’ (Martin 2014a, 18)1. As such, the moderator has less access to the infrastructure of the marketplace and user information than the administrator (Martin 2014a; Van Slobbe 2016). Moderators could receive a salary from the administrators (Martin 2014a).
Multisignature escrow A cryptographic tool that allows buyers to put bitcoins in an escrow account that requires sign-off from two out of three parties – the buyer, the seller, and the website itself – to retrieve the funds. (Mounteney, Griffinths et al. 2016).
New (or Novel) “Substances of abuse, either in a pure form or a preparation, that are not controlled by Psychoactive the 1961 Single Convention on Narcotic Drugs or the 1971 Convention on Psychotropic Substances (NPS) Substances, but which may pose a public health threat” (UNODC 2015 ). They have been designed to mimic established illicit drugs (Druginfo 2015), and are also called ‘legal highs’ as some may not be deemed illegal (yet).
.onion domain Suffix indicating a hidden domain that can be accessed via the Tor network.
Online pharmacies ‘A cybermarket for illegal distribution of drugs that are either unapproved by regulatory authorities, dispensed without a valid prescription, illegal versions of prescription drugs (some ineffective, out of date or contaminated), marketed with fraudulent health claims, or
1 Responsibilities include: ‘regulating forum discussions; identifying fraudulent activity committed by scammers and responding to requests for assistance and complaints from vendors and consumers’ (Martin 2014a, p. 18).
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intended for recreational or criminal use.’ (Maxwell & Webb 2008) The Internet has also facilitated the sales of prescription drugs in recent years (Scammel & Bo 2016).
Operation Onymous Operation Onymous was an internationally coordinated police operation led by the FBI in the United States and involving authorities in 21 countries (Europol 2015). On 5 November 2014, the FBI, together with the U.S. Drug Enforcement Administration, Homeland Security Investigations, and European law enforcement agencies acting through Europol and Eurojust, shut down multiple marketplaces including Silk Road 2.0.
Opioids ‘Opioids are medications that relieve pain. They reduce the intensity of pain signals reaching the brain and affect those brain areas controlling emotions, which diminishes the effects of a painful stimulus’ (National Institute on Drug Abuse 2014a).
Peer-to-peer A system or network that does not have a central server but is distributed between participants (Greenberg 2016; Lewman 2016)
PGP Key Pretty Good Privacy is a data encryption that provides end-to-end cryptographic privacy and authentication that vendors use to encrypt their communications, whereby each individual has a unique PGP key (Cox 2016b).
Reddit ‘Reddit is a website for online content ranging from news and entertainment to social networking where registered members can enter and share content’ (Finklea 2015, 4).
Silk Road (or Silk The first large anonymous online cryptomarket located on the dark net. It was founded in Road 1.0 or SR1) 2011 and was shut down by the FBI in 2013 (Aldridge & Décary-Hétu 2014; BBC 2013; Martin 2014). Several weeks after the taking down of Silk Road, Silk Road 2.0 was launched, which is why the former is also referred to as Silk Road 1.0 or SR1.
Single-vendor shop A cryptomarket that is run by one vendor, which allows vendors to deal directly with their customers avoiding the risks associated with third party escrow or the need to pay a commission to the cryptomarket administrators.
Stealth listings Vendors can create listings that are not available for public view, referred to as ‘stealth’ listings. Vendors send links to these listings privately, but transactions are still processed via the marketplace with escrow facilities remaining available to protect buyers (Aldridge & Décary-Hétu 2014).
Stimulants ‘The use of stimulants increases alertness, attention and energy, and elevate blood pressure, heart rate and respiration’ (National Institute on Drug Abuse 2014b).
Tor Anonymising software that uses encryption to make it difficult for anyone to trace IP addresses (i.e. codes assigned to each computer on the internet) (Barratt 2012, 683).
Vendor A vendor sells his or her (illegal) goods to customers through his or her own seller page (Martin 2014a).
Web crawler Software that methodologically archives websites and extracts information from them. To do so, it starts at a fixed webpage (usually the homepage), downloads that page and parses it for hyperlinks to other pages hosted on the same website. It then follows each hyperlink, adding new hyperlinks it discovers to its list of pages to visit until no new pages are found.
Web scraper A computer software technique to extract information from downloaded web pages identified by a web crawler.
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1. Introduction
In its two latest European Drug Reports, 2015 and 2016, the European Monitoring Centre for Drugs and Drug Addiction (EMCDDA 2015; 2016a), highlighted the rising importance of the role of the Internet in drug markets. Out on the streets, dealers and runners in retail markets for drugs serve a local customer base, who they typically meet face-to-face (May & Hough 2004). Despite the risks of scams or technology failures, the Internet has brought benefits to consumers and vendors. As in many other markets, such as travel, insurance or personal electronics, the Internet has improved transparency and choice for consumers and facilitated ways for drugs businesses to access potential customers and suppliers. Also, it has enhanced the efficiency and security of off-line criminal activities (EMCDDA 2016b). The role of the Internet in facilitating drugs trade has gained considerable attention since a publication in Gawker on ‘Silk Road’ (Chen 2011), the first large anonymous online marketplace located on the ‘dark net’, the hidden part of the Internet that is not indexed by search engines (Aldridge & Décary-Hétu 2014; Martin 2014a). These online marketplace platforms, called cryptomarkets, bring together multiple vendors listing mostly illegal goods and services for sale. Silk Road had emerged in 2011 and was shut down by the FBI in October 2013. Its administrator, operating under pseudonym Dread Pirate Roberts, was arrested and money that was held in deposit by the site were confiscated (BBC 2013). Soon after Silk Road was taken down, various similar marketplaces or copy cats emerged, among which a new version of the original Silk Road: Silk Road 2.0 (SR2). In November 2014, Europol (2014) announced the closing down of multiple dark websites including SR2. Not much later, several arrests were made in the Netherlands after taking down the online market places Black Market Reloaded and Utopia (Openbaar Ministerie 2015). It is not just the obscure corners of the Internet where drugs are being traded. The EMCDDA (2015a) detected 651 web shops on the surface web (or clear net, containing those web sites that are indexed by search engines) in 2013 with unregulated substances on offer, mostly so-called new psychoactive substances (NPS or ‘legal highs’), which are not regulated, but have a similar pharmacological basis to illegal drugs. As the Internet has had a revolutionary impact on many legitimate industries, the question is whether it has started to transform drug markets as well. While there is no lack of attention for these new trends in markets for illicit drugs, the evidence on their size, shape and evolvement is fairly limited. The extent and nature of this phenomenon and its impact is investigated in more detail in this report.
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1.1. Objectives and scope
This report aims to investigate the role of the Internet in facilitating drugs trade. It is commissioned by the Research and Documentation Centre (Wetenschappelijk Onderzoek- en Documentatiecentrum, WODC), the independent research arm of the Ministry of Security and Justice in the Netherlands. Special attention was therefore paid to the role of Dutch actors in facilitating this trade. The Netherlands appears to play an important role in international drug markets. It is the largest producer of ecstasy and herbal cannabis in Europe and a hub for the distribution of cannabis resin and cocaine (EMCDDA 2016a). Whether that role is replicated in the online world was analysed in this report. The overall aims of this study were: • To characterise the scope and the size of Internet-facilitated drugs trade; • To identify the role of the Netherlands in Internet-facilitated drugs trade; and • To delineate potential avenues for law enforcement for detection and intervention.
When referring to the total scale and scope of Internet-facilitated drugs trade, this study considers trade via cryptomarkets as well as trade facilitated by the clear net. For reasons explained in Chapter 4, the emphasis of this report will be on cryptomarkets, especially the quantitative parts. Chapter 3 will also explain that previous studies have shown that cryptomarkets cover the vast majority of illicit drugs trade facilitated by the Internet, while clear net markets are dominated by new psychoactive substances (NPS).
1.2. Research questions
The Terms of Reference for this study specified a number of research questions. The research team amended these, based on the available sources and proposed methodologies. Consequently, the study focused on answering 22 research questions. These questions are divided into five clusters, looking at: A. Merchandise: the volumes and types of drugs and other goods and services traded; B. Cryptomarkets and other Internet-based market places: their numbers, workings and relevant trends; C. Shipping routes of drugs, including the role of the Netherlands; D. Actors involved in Internet-facilitated drugs trade and their modus operandi; and E. Avenues for detection and intervention.
The table below lists these research questions and indicates the section in which their results are discussed.
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Table 1.1. Research questions
# Research questions Section A. Merchandise
1 Which types of drugs are being traded over the Internet? And how does the size of trade of 4.3 and different types of drugs relate to one another? 4.4 2 In which volumes are the drugs offered? To what extent do these volumes refer towards 4.5 and wholesale or retail? 4.6 3 To what extent are goods and services offered in support of other activities in the drugs 4.7.1. supply chain? 4 To what extent are the drugs offered in combination with other (legal or illegal) goods or 4.7.2 services? If so, which ones? B. Cryptomarkets and other Internet-based marketplaces
5 How many cryptomarkets and other Internet-based marketplaces exist where drugs are 4.2 traded? How do these relate to each other in terms of listings? 6 To what extent do cryptomarkets and other Internet-based marketplaces put restrictions on the 3.4.1 drugs trade? 7 Which trends can we observe in the field of cryptomarkets and other Internet-based 3.2 marketplaces where drugs are being traded? 8 What are the possible trends that occur in terms of the number of vendors involved in drugs 4.8 trade on the Internet and their listings? C. Shipping routes
9 From which countries do vendors operate primarily? 5.1 10 To which countries are vendors willing to ship? 5.2 11 Are there indications that the Netherlands is an important country of origin for drugs trade 5.1 and on the Internet? 4.3 – 4.7 D. Actors involved in Internet-facilitated drugs trade and their modus operandi
12 Which actors are involved in the trade of drugs on the Internet? 6 13 What is known about the developers and administrators of such marketplaces and websites? 6 14 What can be said about the characteristics of these vendors? 6.2 15 How does the payment of Internet-based drugs trade proceed? 3.1.2 16 What is the modus operandi in the shipping of drugs? 3.1.5 17 What can be said about (the development of) the size of the population of customers/buyers 5.2.2 in the Netherlands? 18 What can be said about the characteristics (age, criminal antecedents) of the 6.3 customers/buyers? Which trends are occurring? 19 What is the modus operandi in the buying and receiving of drugs? 6.3.3 E. Avenues for detection and intervention
20 Which broad strategies are available to law enforcement in the detection and intervention of 7.2 the Internet-facilitated drugs trade? 21 Which barriers do law enforcers face in the Netherlands in detection and prosecution of 7.2 drugs trade on the Internet? 22 What were the consequences of bringing down marketplaces? To what extent did any 7.2.4 substitution effects occur?
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1.3. Structure of this report
The next chapter provides an elaborate description of the methods used in this study and explains their limitations. Chapter 3 offers a primer on Internet-facilitated drugs trade. It explains many of the terms used and concepts analysed in the report, and introduces how these markets work. For those unfamiliar with those concepts, it may be helpful to review Chapter 3 first, because it defines much of the terminology used in Chapter 2. The chapter ends with a qualitative description of some important trends in this field. This remainder of the report is structured along the lines of the research questions. Chapter 4 reports on the results of the study’s assessment of the size and scope of Internet-facilitated drugs trade, offering insights from our empirical data collection, and from interviews and the literature. Chapter 5 looks into shipping routes of drugs traded via the Internet, and discusses the role of the Netherlands in particular. Chapter 6 reports on the characteristics and modus operandi of actors involved in Internet- facilitated drugs trade. Based on these findings and mainly insights from interviews, Chapter 7 summarises four main avenues of detection and intervention by law enforcement. Finally, Chapter 8 provides some overarching conclusions and answers each of the research questions listed above.
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2. Methodology
In order to address the research questions as defined for this study, a mix-of quantitative and qualitative methods was applied, consisting of: a review of the literature; in-depth interviews with experts and law enforcement representatives; collection and analysis of cryptomarket data; and a review of police case files. These methods are discussed in more detail below and additional information on the literature search protocol is included in Appendix B. The emphasis of this study was on drugs trade via cryptomarkets. Previous studies have shown that cryptomarkets are dominated by illicit substances (e.g. Aldridge & Décary-Hétu 2014; Soska & Christin 2013), while clear net market places concentrate on new psychoactive substances (NPS). While developments in the availability and consumption of NPS have been highlighted as important trends (e.g. EMCDDA and Europol 2015; 2016), the emphasis of this study has been on trade of illicit substances via cryptomarkets. The quantitative assessment of the size and scope of this phenomenon conducted as part of this study was carried out through a method designed and developed by some of the report authors, involving the collection and analysis of scraped cryptomarket data (see Section 2.3 for an explanation of this method). Trade of NPS via clear net market places was primarily covered by literature review (see Section 2.1) and interviews (see Section 2.2). Table 2.1 provides an overview of the methods used to address the five clusters of questions identified in Chapter 1.
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Table 2.1. Overview of study scope and methodologies
Cryptomarkets Clear net markets Clusters (focus on illicit drugs) (focus on NPS) Analysis of scraped data Literature review Literature review A. Merchandise Interviews Interviews Case files Analysis of scraped data B. Cryptomarkets and Literature review other Internet-based Literature review Interviews market places Interviews Literature review C. Shipping routes Analysis of scraped data Interviews Literature review D. Actors and modus Literature review Interviews operandi Interviews Case files
E. Avenues for detection Interviews and intervention Literature review
Reading the methodological descriptions provided in this chapter may require some familiarity with the concepts and workings of cryptomarkets e.g (vendors, customer feedback, escrow, finalise early, etc.) and other online market places. Chapter 3 contains a detailed introduction to cryptomarkets and clear net markets for drugs for those not familiar with this field.
2.1. Literature review
The aim of the literature review was to identify, analyse and synthesise scientific and grey literature2 about specific elements of Internet-facilitated drugs trade (both on the clear and dark net) and the options to detect and intervene in these practices. This review particularly focused on complementing aspects of the study’s scope that could not be covered in the analysis of scraped cryptomarket data, such as vendor and buyer characteristics and data on Internet-facilitated drugs trade on the clear net. The review did not aim to capture and analyse all literature or other sources available on the topic of Internet-facilitated drugs trade and should therefore not be understood as a comprehensive bibliography on the topic. For transparency and for further reference, all identified documents are listed in a bibliography in Appendix D. A sub-set of these documents were subsequently analysed. The process followed the following steps, which are a common approach to conducting literature reviews: 1. Protocol development 2. Identifying relevant literature 3. Study selection
2 Grey literature refers to those publications that are produced on all levels of government, academics, business and industry in print and electronic formats, but which is not controlled by (peer-reviewed) academic journals.
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4. Data extraction 5. Quality assessment, synthesising and interpreting the evidence
A detailed description of the search strategy and consulted websites can be found in Box 2.1 on the next page and Table B1 in Appendix B.
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Box 2.1. Steps for conducting the literature review
Step 1. Protocol development
• Defining inclusion and exclusion criteria for studies: o Inclusion: literature in English and Dutch, academic papers, reports from professional organisations, conference papers, investigative journalism. Exclusion: letters, news items. In terms of topics, information on online pharmacies was excluded. • Determining search terms and search strings (Table B1 in Appendix B) • Identifying sources to be searched o Open-source and subscription-only bibliographic databases (Table B1 in Appendix B for a full list of databases consulted) o Google Scholar o Google o Searches within selected websites (Table B2 in Appendix B for a full list of websites consulted) o In addition to the online searches, the study included literature written or indicated by research team members or provided by interviewees o Furthermore, a snowballing approach was applied to references of the sources the project team considered to be most important in the field of Internet-facilitated drugs trade • The NVivo3 coding frame was developed based on the research questions, allowing the software to mark those sections, paragraphs or phrases that provide insights into specific research questions. Step 2. Identify relevant literature
• Conducting the full search on 3 and 4 January 2016 • Including additional materials as provided by members of the research team or interviewees during later stages of the study • Over 300 articles were identified Step 3. Study selection
• Reviewing study titles • Reviewing abstracts if inclusion/exclusion could not be determined based on title • Just over 100 articles were defined as relevant for inclusion in the current study • Given the resources available for this study, it was decided that a total of 88 relevant (based on their titles and/or abstract) and available articles would be included for detailed analysis in a software package called NVivo.to extract information relevant to the research questions. Some of the excluded articles were still used for reference in particular parts of the study (e.g. the introduction chapter), yet were not analysed in accordance with steps 4 and 5 (this also applied to (additional materials identified by the research team or sent to the research team after the 88 articles were selected). See Appendix D for lists of included and excluded studies. Step 4. Data extraction
• Reviewing and characterising selected papers/reports through using a coding frame in qualitative data analysis software NVivo • The coding frame was developed based on the research questions. Where sections, paragraphs or specific sentences in any of the selected sources provided insights into one or more of the research questions, they were marked in accordance with those research questions. Step 5. Quality assessment, synthesising and interpreting the evidence • Bringing together relevant evidence into a cohesive whole. • When synthesising and interpreting the evidence, aspects contributing to the rigour of these publications were taken into account, for example peer reviewed, or transparency in methods/data used. The relevance in relation to the research questions was also taken into account.
3 NVivo is a qualitative data analysis (QDA) computer software package, designed for analysing very rich text-based and/or multimedia information.
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2.2. In-depth interviews
In order to further examine the characteristics of Internet-facilitated drugs trade and (possible) practices around detection and intervention, semi-structured interviews with experts in Internet-facilitated drug markets and with law enforcement representatives were conducted. In addition to these one-to-one interviews, a focus group was conducted with Dutch law enforcement representatives, in order to capture views from several stakeholders at once and to facilitate a group discussion around the study topic and to validate study findings to date. The interviews and focus group aimed to capture expert views on and knowledge of the topic in order to supplement the cryptomarket analysis and information gathered through the literature review. Given the international character of Internet-facilitated drugs trade, respondents from the Netherlands as well as other countries were interviewed. Approval from the Dutch police was granted for conducting interviews with Dutch law enforcement representatives.
Selection and recruitment of interviewees The research team used a purposive sampling strategy for selecting the interviewees since there was a good understanding of the type of interviewees relevant for this research.4 Due to its flexible nature, quota sampling – a form of purposive sampling – was used in which minimum quotas per interviewee category (experts and law enforcement representatives) were laid down. This procedure ensured ‘that key groups are represented in the sample, while providing flexibility in the final sample composition’ (Robinson 2014, 34). In addition to the list of potential interviewees that the research team created, the team also received contact details via other sources, for example through members of the Scientific Steering Committee of this study and through interviewees. A contact person at the Dutch police assisted the research team in approaching law enforcement representatives and other experts in March 2016 and subsequently helped the researchers in setting up the logistics for the focus group, which took place in April 2016. Respondents for the individual interviews were contacted between December 2015 and April 2016. In those cases, where the candidate interviewees had not respondent after two reminders, they were considered a non-response. There were a few instances where respondents indicated that based on their organisation’s policy they could not take part in an interview. The table below lists interviewee numbers per category (expert or law enforcement interview) and the modes in which the interviews were conducted (i.e. in-depth interviews, focus group or in writing). A full list of interviewees is provided in Appendix E.
4 As Robinson (2014) summarises it: ‘The rationale for employing a purposive strategy is that the researcher assumes, based on their a-priori theoretical understanding of the topic being studied, that certain categories of individuals may have a unique, different or important perspective on the phenomenon in question and their presence in the sample should be ensured’ (p. 32).
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Table 2.2. List of interviewees
Type of interviewee Type of interview Total
Experts in Internet-facilitated drugs trade In-depth interview 8
Dutch law enforcement representatives (e.g. police, public In-depth interview 6 prosecutor) involved in targeting Internet-facilitated drugs trade
Dutch law enforcement representatives with knowledge of detection, Focus group 6 investigation and prosecution (i.e. police, anti-fraud agency, (forensic) research organisations)
Representatives of European and international agencies involved in In-depth interviews and in 6 targeting Internet-facilitated drugs trade writing
Total number of interviewees consulted 26
Conducting the interviews In advance and reiterated at the start of the interview, respondents were provided with an information sheet (included in the invitation email) that provided details of the study, confirmed that interviewees’ participation was voluntary, set out about how information provided would be attributed and asked interviewees’ consent for audio-recording of the interview. For the in-depth interviews, respondents were informed that the information they provided would not be attributed to named individuals and were asked if information could be attributed to them using general roles or types of organisation instead (for example ‘law enforcement expert’ or ‘expert’). The focus group was held under the Chatham House Rule in which findings were not attributed to individual members of the focus group. The majority of the expert and law enforcement interviews were conducted in a one-to-one setting (with a few interviews in which two respondents took part), either by phone or face-to-face, and the interviews were recorded for note-taking purposes after consent of the interviewees. A topic guide was prepared in advance of the interviews, covering the main research questions. The topic guide used for the in-depth interviews is included in Appendix F, and key focus group questions are listed in Box 2.2 below. The topic guide and focus group questions followed a semi-structured approach that left room for elaboration or additional questions to be raised and discussed.
Box 2.2. Key focus group questions
How does Internet-facilitated drugs trade relate to the global (offline) drugs trade? What will be the trend in the long term?
The what extent has Internet-facilitated drugs trade taken over a part of the street trading / or has it tapped into a new market of users who previously did not (or hardly) bought drugs?
What are the priorities in tackling Internet-facilitated drugs trade?
What are possible targets for detection and intervention of Internet-facilitated drugs trade? What are the possibilities for detection and intervention during the different parts of the supply chain (production excluded)?
What are the advantages and disadvantages of these targets, and what obstacles must be overcome?
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Although the research team raised these questions during the interviews and the focus group, the extent to which they were answered depended on the information provided by interviewees. For example, as appropriate given the topic, law enforcement representatives and experts could not answer certain questions that would require discussion of sensitive information relating to ongoing investigations or law enforcement methods, sources and approaches. This particularly limited the extent to which this study could answer the research questions regarding avenues for intervention and detection. When information from the interviews was unclear or when it was not clear if information could be brought in the public domain, the research team followed–up with relevant interviewees for clarification and/or verification. Via email, interviewees were also asked to confirm if and how they preferred to be mentioned in the list of interviewees, and were provided with an example on how interviewee data would be used in the report. All interviewees agreed with how their data would be used for this report. In addition, a representative of the Dutch police reviewed this report in advance of its publication to ensure that no sensitive information on detection and intervention practices was included.
Analysis and reporting of interview data Detailed interview notes were taken during the interview and analysed by members of the research team using an approach in which different themes relevant to the research questions were identified and clustered. The analysis looked for areas of agreement and disagreement both between and within different categories of interviewees (experts or law enforcement representatives). Interview data were then incorporated throughout the report where they complemented or contested findings from the cryptomarket analysis or literature review. Interviewee codes are used in the report to indicate the type of interviewee (‘EX’ for ‘expert’ and ‘LE’ for ‘law enforcement expert’). The numbers added to these codes to not reflect the order of interviewees listed in Appendix E. Focus group participants are referred to as one group.
2.3. Quantitative analysis of cryptomarket data
This study collected new, primary data from cryptomarkets, web sites selling licit and illicit products and services on the dark web. This was done through the use of the DATACRYPTO software tool, designed by Décary-Hétu and Aldridge (2013) specifically designed for the purpose of collecting information about online drugs transactions. Table 2.3 presents the eight cryptomarkets monitored for this report, including their date of creation, the number of listings and the number of vendors. These cryptomarkets were selected by the research team based on their size, their focus on specific types of products or their origin; for example, French Dark Net is designed for French users. The way in which the DATACRYPTO tool works means that it cannot be used on some cryptomarkets. For instance, Outlaw, Valhalla, TheRealDeal and Dr. D are markets that were programmed in such a way that the DATACRYPTO tool was unable to stay logged in and collect data. We believe that this is more the result of anomalies in the programming, rather than the use of active crawling countermeasures. The German-Plaza cryptomarket focused mainly on hacking services and stolen financial information and was therefore not crawled.
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Table 2.3. Descriptive statistics of cryptomarkets
Cryptomarket Date of creationa Number of listings Number of vendorsb AlphaBay 2014/12/22 37,896 2,001 Cryptomarket 2014/12/22 8,362 432 Dark Net Heroes League 2015/05/27 387 76 Dreammarket 2013/11/13 22,284 847 French Dark Net Unknown 1,307 331 Hansa 2015/07/18 4,829 219 Nucleus 2014/10/24 26,538 1,013 Python 2015/07/10 4,208 144 Total 105,811 5,063 NOTE: a Information about the date of creation of cryptomarkets was collected from DeepDotWeb (2016a). b Vendors who operated on multiple cryptomarkets were included in the count of vendors for each cryptomarket where they operated. The total number of vendors is therefore not indicative of the unique number of vendors active on cryptomarkets in January 2016.
2.3.1. Data collection method
The data for this report were collected over a period of five days starting on January 11th, 2016 using the DATACRYPTO software tool developed by Décary-Hétu and Aldridge (Décary-Hétu & Aldridge 2013; Aldridge & Décary-Hétu 2015a). DATACRYPTO is a web crawler/scraper class of software that systematically archives websites and extracts information from them. Once a cryptomarket has been identified, DATACRYPTO is set up to log in to the site and download its contents. To do so, it starts at a fixed webpage defined by the researchers (usually the homepage). It first downloads that page and parses it for hyperlinks to other pages hosted on the same website. It then follows each hyperlink, adding new hyperlinks it discovers to its list of pages to visit until no new pages are found. At that point, DATACRYPTO switches from its crawler to scraper mode and starts extracting information from the pages it has downloaded. Each data point is coded by the researchers who teach DATACRYPTO what to look for (for example product titles, prices, product descriptions). DATACRYPTO stores data from all of the websites it crawls and scrapes in a unified database that allows for cross-market queries such as: who are the vendors of cannabis operating from the Netherlands in all cryptomarkets? We note (and discuss further in later sections of this report) that the data that can be collected via crawling and scraping from a drug cryptomarket relates primarily to the supply side: we cannot ascertain location or any other characteristics of buyers. As well as analysis of new data collected for this study, analyses related to trends are based in part on data that were collected on Silk Road 1.0 between September 13th and September 15th 2013 using the same DATACRYPTO tool. The earlier version of DATACRYPTO used by members of the research team to collect these data worked in exactly the same way, but with a reduced level of automation. In both the earlier and current versions of DATACRYPTO, the end result is identical: a list of all listings that were online at one point in time; in this case, on or just after January 11th 2016.
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Using a single crawl to study cryptomarkets may be problematic as a crawler may appear to have crawled an entire cryptomarket when it in fact only indexed a part of it (see Soska & Christin 2015 for a discussion of this issue). This can happen when the Tor network itself is having reliability issues, when the cryptomarket is actively logging out the crawler, requiring it to log back in again or when the cryptomarket itself goes offline. For larger cryptomarkets that take days to crawl, it is also possible for listings to go offline and for new ones to be created during the crawl. Our DATACRYPTO tool was designed to deal with these issues from the start. It is a state-aware software, meaning that the result of each request is analysed and logged by the software. If the Tor network or the cryptomarket was down, it would know to stop and try to continue its crawl a few minutes later. If a request for a page returned a different page (e.g. asking for a listing page and receiving the home page of the cryptomarket), the request is marked as failed and added to the count of failed pages. During the January crawl, all markets had a well below five per cent failed request rate. DATACRYPTO is also able to detect whether it is logged in or logged out of a cryptomarket and to login autonomously if needed. During the January crawl that produced the data used in this report, on the occasions that DATACRYPTO was unable to re-establish the log-in itself, it sends an email to researchers who are able then manually to log back in. For some cryptomarkets, this manual login had to be repeated dozens of time in order to complete the crawl; for other cryptomarkets, this was never necessary. The only issue with the completeness of our crawl is the fact that some larger cryptomarkets like Alphabay have over 500,000 web pages that need to be indexed. This needs to be spread over a period of days, days during which the cryptomarket itself is changing. This issue is offset by the slow churn of listings over a period of five days and the fact that new listings are also indexed by the crawler.
2.3.2. Methods for estimating measures
The ‘big data’ generated by crawling and scraping cryptomarkets cannot be used to generate analysis and understanding uncritically, and therefore must be manually checked, cleaned and recoded before it can be analysed. Furthermore, due to several potential caveats, we make conservative assumptions and provide lower bound estimates on the size and scope. Estimates in this study, therefore, err on the side of not over- estimating or misleading the size and scope of the market. The approach taken to the following issues are explained below:
• how we treat holding process; • how we count the number of transactions; • how we estimate monthly revenues; • how we identify shipping routes; • how we generate product categories; • how we estimate quantities; • our approach to vendor name matching; and • dealing with stealth listings.
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2.3.2.1. Holding prices
One issue we faced is related to prices, and more precisely, to holding prices on listings. Vendors sometimes increase the price of a listing by an order of magnitude when out of stock or otherwise unwilling/unavailable to process transactions. This technique of using holding prices has the advantage for the vendor of keeping a listing active with all of its associated customer feedback, while simultaneously deterring customers from making purchases as a result of the abnormally high price of the listing. Holding prices are problematic when taken as indicative of ‘actual’ market prices, as they will distort estimations of drug prices, revenues and price per unit of drugs.5 To identify listings with possible holding prices, we created a historical database of the prices of listings from previous crawls and scrapes of cryptomarkets that were made in the months prior to the data collected for this report using the same DATACRYPTO tool. Instead of using the most recent price associated with a listing derived from our data collection, we used its median price, thereby excluding occasional high prices collected for any one listing. This historical database contained an average of 4.4 prices for each listing (Min = 1.0; Max = 14.0; S.D. 3.4). A similar technique was used by Soska and Christin (2015) to deal with the potential distorting effect of holding prices. Of course, this technique does not eliminate all holding prices since some newer listings have no historical prices.
2.3.2.2. Number of transactions
A second estimation issue relates to the number of transactions facilitated by cryptomarkets. The size and scope of cryptomarkets is one of the main research questions for this report and to measure it, it is essential to calculate the number of purchases made connected to each listing over a period of time. Unfortunately, cryptomarkets do not post publicly the transactions they facilitate and researchers must use a proxy to estimate transactions. All past research into cryptomarkets (Aldridge & Décary-Hétu 2014; 2016a; Christin 2013; Décary-Hétu et al. forthcoming; Soska & Christin 2015), has used customer feedback as the best and only proxy to estimate transactions. When making a purchase, customers are strongly encouraged to leave feedback. This feedback is posted underneath each listing and usually includes a date, a message (e.g. ‘great product, fast delivery, would repeat business’) and a score.
The percentage of feedbacks received Customer feedback as a proxy for transactions will always result in an under-estimation of actual transactions. Some customers may be unwilling to leave feedback or may forget to do so after a shipment has been received. Information regarding the proportion transactions without feedback is scant. To estimate it, Aldridge and Décary-Hétu (2014) compared the number of feedbacks their DATACRYPTO tool had collected to the number of transactions advertised on the vendors’ profiles on SR1. Their analysis showed that 88 per cent of transactions at the time led to a public feedback. The same method was used by the authors to update the extent of underestimation when data were collected for the present analysis in January 2016. Only one cryptomarket active in 2016 provided a useable vendor transaction metric:
5 Whilst increasing prices as supply falls is a typical economic behaviour, ‘missing prices’ would be typical when firms have no supply. However, vendors in this market cannot take their good off the market and instead provide extreme, obviously unrealistic ‘holding’ prices. We reduce the impact of these extreme prices by using the median.
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DreamMarket. Based on this limited sample (N = 1,129 vendors), 71 per cent of transactions of vendors were captured through feedbacks. Similarly, a law enforcement representative (LE2) stated that their intelligence suggest that 80.6 per cent of transactions lead to public feedback on large cryptomarkets; a figure that is right in between the two DreamMarket estimates. These estimates suggest that the number of feedbacks should be multiplied by between 1.14 and 1.41 to better estimate the true number of transactions. Doing so, however, assumes that the DreamMarket- obtained estimate is representative of all cryptomarkets in connection to the number of missing feedbacks we were able to detect. This is highly unlikely since the design of each cryptomarket varies in terms of how much it is a default and/or explicit for customers to leave feedback. Some cryptomarkets may also send reminders to customers who have failed to leave feedback or may not require that repeat customers leave feedbacks for each purchase of the same listing. Combined, these limitations make any multiplier based on the partial data available to us limited to only one marketplace sufficiently unreliable that we elected to refrain from providing range estimates for transactions. As explained below, however, we do provide an overall upper-boundary estimated for the total monthy revenues (see Section 2.3.2.3).6
The moment of capturing the feedback Another issue relating to the number of transactions relates to the moment of capturing the feedback. Given the growth of cryptomarkets over the past years (Soska & Christin 2015), the number of transactions on cryptomarkets overall has increased steadily. To better estimate the latest trends, this report estimates transactions that occurred during the month before the data collection. Transactions are based therefore on feedbacks with a post date between 11 December 2015 and 10 January 2016. Because feedbacks occur at some point subsequent to the transaction date, these feedbacks will (1) include some purchases made prior to the data collection period; and (2) exclude some purchases made during the data collection period, for which feedback had yet to be posted. Other feedbacks may be unaffected by the delay between purchase, and shipment receipt when customers ‘finalised early’ (that is, paid for goods prior to their receipt). Cryptomarkets do not contain information about transaction date, and although we use feedbacks as a transaction proxy measure, this should be understood as the moment when funds are released from a customer to a vendor in situations when customers leave feedback, and not when a drug was purchased or delivered. We therefore believe that this will not have impacted our estimate of the number of transactions.
The turnover of listings on cryptomarkets The final issue regarding the number of transactions is that of the high turnover of listings on cryptomarkets. Listings only remain online for a few weeks on average and vendor accounts themselves are only online for 220 days on average (Soska & Christin 2016). Since the DATACRYPTO tool only
6 We further investigated to see if the extent to which feedbacks underestimated transactions was related to the price of a listing. We calculated for each vendor the extent of underestimation and correlated this with the average value of the products sold by that vendor. The Pearson correlation was not significant suggesting that the extent of underestimation is not related to price. Similarly, a law enforcement official (LE2) states that their intelligence confirms these findings.
15 RAND Europe Internet-facilitated drugs trade collected the listings during the week of 11 January 2016, it did not collect all of the listings that were active during the feedback sampling period from 11 December 2015 to 10 January 2016. As such, it was unable to count the feedbacks associated to those listings. To compensate for the missing listings, a new methodology was developed in Aldridge and Décary-Hétu (2016a) and used once again in Décary-Hétu et al. (forthcoming). It assumes that during the sampling period, the number of listings was fairly similar to those during the crawl period (the week of January 11th 2016). It also assumes that the missing listings transacted at about the same rate as those that were online during the crawl period. In other words, we assume that the listings that disappeared during the feedback sampling period were replaced by similar listings and that the missing feedbacks can be estimated using the active listings. To do so, we ‘scale up’ the number of feedbacks for the listings that were placed online after the initial date of the feedback sampling period by multiplying their daily rate of transaction by 30. So, for example, if a listing had received five feedbacks in the ten days since it was first posted by the vendor, its number of feedbacks was multiplied by three (to 15) to allow us to make appropriate comparisons across listings with varying lifespans. More research will be needed to evaluate precisely the accuracy of this methodology, but it is at the time of writing, the only approach available in the literature to compensate for missing listings however and should improve the accuracy of the estimates. Therefore, it was used in this study.
2.3.2.3. Monthly revenues
Cryptomarkets do not make publicly available the revenues of their vendors. To estimate monthly revenues, we multiplied the number of feedbacks of each listing by its median price. This provided us with a lower-bound estimate of the revenues generated on cryptomarkets for the month preceding 11 January 2016. Of course, these represent gross revenues and the actual profits from these revenues are unavailable and notoriously difficult to estimate self-employment costs. We note here that across the eight cryptomarkets the majority of all marketplace listings (79 per cent) generated no transactions; 72 per cent of drug listings generated no sales. Listings with at least one transaction were therefore more numerous for drug (28 per cent) than non-drug (11 per cent) listings. Moreover, having at least one transaction associated with a listing was not evenly spread across listing price. For drug listings, this was most common among lower priced listings (36 per cent of listings up to $100) and dropped in a linear fashion for higher priced listings (8 per cent listings priced over $1000). It is important to understand whether the month relevant to our data collection (mid-December to mid- January) is representative of drug purchasing at other times of the year. Research has shown that substance consumption (both alcohol and drugs) varies by month/season (Cho et al. 2001; Del Río; Lai et al. 2013; Prada et al. 2002); use is typically higher during holiday periods, with December often the peak month. To our knowledge, there is no research examining seasonal variation in drug buying. Although we might expect drug use and drug purchasing generally to occur at roughly the same time, drug users may purchase in advance of their use, and we reason that this is particularly likely to be the case for customers making purchases for personal use on cryptomarkets (and even more likely to be the case for cryptomarket customers who are drug dealers sourcing stock for offline distribution). One the one hand, our data collection refers to a period that overlaps with what is typically an increased consumption period for drug users (December) as well as a period typically associated with decreased use (January), suggesting that seasonal differences may be cancelled out. On the other hand, cryptomarket users must make purchases in
16 Internet-facilitated drugs trade RAND Europe advance of their use to take into account processing and delivery times, suggesting that most cryptomarket drug-buying intended to supply seasonally inflated use in the December period will have occurred in November and early December, thus prior to the period to which our data collection refers. This ‘reasoned guesswork’ leads us to suggest that the period to which our data collection refers may include fewer transactions than might have been the case had our data collection referred to October or November. It is therefore consistent with our aim to generate lower bound estimates. When estimating an upper-boundary estimate of the total monthly drugs revenues on cryptomarkets
( ), we use the following formula: